Vortex 920AZG-39 VTX Aluminum Rear Sprocket Pitch Sprockets - 39-Tooth 520

The Vortex 920AZG-39 is a high-performance VTX series aluminum rear sprocket featuring a 39-tooth count and 520 pitch chain compatibility. Engineered for serious riders seeking a lightweight upgrade over heavy OEM steel sprockets, this sprocket is CNC-machined from high-grade 7075 aluminum alloy for an exceptional strength-to-weight ratio.

Vortex sprockets are manufactured to precise tolerances, ensuring smooth, consistent power transfer and reliable chain engagement lap after lap. The hard anodized finish provides superior corrosion resistance and surface hardness, extending service life even under demanding track or street conditions.

Key Features:

• 39-tooth rear sprocket for tunable gearing options
• 520 pitch chain compatibility
• CNC-machined from 7075 aluminum alloy for reduced rotating mass
• Hard anodized finish for corrosion resistance and durability
• Precision-machined teeth for smooth, consistent chain engagement
• Significant weight savings over OEM steel sprockets
• Manufactured by Vortex Racing, a trusted name in motorsport drivetrain components

The Vortex VTX aluminum rear sprocket is an ideal choice for riders looking to fine-tune their gearing ratio for improved acceleration or top-speed performance, whether on the track or the street.